diff options
Diffstat (limited to 'apps/plugins/sdl/src/thread/beos/SDL_syssem.c')
-rw-r--r-- | apps/plugins/sdl/src/thread/beos/SDL_syssem.c | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/apps/plugins/sdl/src/thread/beos/SDL_syssem.c b/apps/plugins/sdl/src/thread/beos/SDL_syssem.c deleted file mode 100644 index eba1944bc8..0000000000 --- a/apps/plugins/sdl/src/thread/beos/SDL_syssem.c +++ /dev/null | |||
@@ -1,142 +0,0 @@ | |||
1 | /* | ||
2 | SDL - Simple DirectMedia Layer | ||
3 | Copyright (C) 1997-2012 Sam Lantinga | ||
4 | |||
5 | This library is free software; you can redistribute it and/or | ||
6 | modify it under the terms of the GNU Lesser General Public | ||
7 | License as published by the Free Software Foundation; either | ||
8 | version 2.1 of the License, or (at your option) any later version. | ||
9 | |||
10 | This library is distributed in the hope that it will be useful, | ||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Lesser General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Lesser General Public | ||
16 | License along with this library; if not, write to the Free Software | ||
17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
18 | |||
19 | Sam Lantinga | ||
20 | slouken@libsdl.org | ||
21 | */ | ||
22 | #include "SDL_config.h" | ||
23 | |||
24 | /* Semaphores in the BeOS environment */ | ||
25 | |||
26 | #include <be/kernel/OS.h> | ||
27 | |||
28 | #include "SDL_thread.h" | ||
29 | |||
30 | |||
31 | struct SDL_semaphore { | ||
32 | sem_id id; | ||
33 | }; | ||
34 | |||
35 | /* Create a counting semaphore */ | ||
36 | SDL_sem *SDL_CreateSemaphore(Uint32 initial_value) | ||
37 | { | ||
38 | SDL_sem *sem; | ||
39 | |||
40 | sem = (SDL_sem *)SDL_malloc(sizeof(*sem)); | ||
41 | if ( sem ) { | ||
42 | sem->id = create_sem(initial_value, "SDL semaphore"); | ||
43 | if ( sem->id < B_NO_ERROR ) { | ||
44 | SDL_SetError("create_sem() failed"); | ||
45 | SDL_free(sem); | ||
46 | sem = NULL; | ||
47 | } | ||
48 | } else { | ||
49 | SDL_OutOfMemory(); | ||
50 | } | ||
51 | return(sem); | ||
52 | } | ||
53 | |||
54 | /* Free the semaphore */ | ||
55 | void SDL_DestroySemaphore(SDL_sem *sem) | ||
56 | { | ||
57 | if ( sem ) { | ||
58 | if ( sem->id >= B_NO_ERROR ) { | ||
59 | delete_sem(sem->id); | ||
60 | } | ||
61 | SDL_free(sem); | ||
62 | } | ||
63 | } | ||
64 | |||
65 | int SDL_SemWaitTimeout(SDL_sem *sem, Uint32 timeout) | ||
66 | { | ||
67 | int32 val; | ||
68 | int retval; | ||
69 | |||
70 | if ( ! sem ) { | ||
71 | SDL_SetError("Passed a NULL semaphore"); | ||
72 | return -1; | ||
73 | } | ||
74 | |||
75 | tryagain: | ||
76 | if ( timeout == SDL_MUTEX_MAXWAIT ) { | ||
77 | val = acquire_sem(sem->id); | ||
78 | } else { | ||
79 | timeout *= 1000; /* BeOS uses a timeout in microseconds */ | ||
80 | val = acquire_sem_etc(sem->id, 1, B_RELATIVE_TIMEOUT, timeout); | ||
81 | } | ||
82 | switch (val) { | ||
83 | case B_INTERRUPTED: | ||
84 | goto tryagain; | ||
85 | case B_NO_ERROR: | ||
86 | retval = 0; | ||
87 | break; | ||
88 | case B_TIMED_OUT: | ||
89 | retval = SDL_MUTEX_TIMEDOUT; | ||
90 | break; | ||
91 | case B_WOULD_BLOCK: | ||
92 | retval = SDL_MUTEX_TIMEDOUT; | ||
93 | break; | ||
94 | default: | ||
95 | SDL_SetError("acquire_sem() failed"); | ||
96 | retval = -1; | ||
97 | break; | ||
98 | } | ||
99 | |||
100 | return retval; | ||
101 | } | ||
102 | |||
103 | int SDL_SemTryWait(SDL_sem *sem) | ||
104 | { | ||
105 | return SDL_SemWaitTimeout(sem, 0); | ||
106 | } | ||
107 | |||
108 | int SDL_SemWait(SDL_sem *sem) | ||
109 | { | ||
110 | return SDL_SemWaitTimeout(sem, SDL_MUTEX_MAXWAIT); | ||
111 | } | ||
112 | |||
113 | /* Returns the current count of the semaphore */ | ||
114 | Uint32 SDL_SemValue(SDL_sem *sem) | ||
115 | { | ||
116 | int32 count; | ||
117 | Uint32 value; | ||
118 | |||
119 | value = 0; | ||
120 | if ( sem ) { | ||
121 | get_sem_count(sem->id, &count); | ||
122 | if ( count > 0 ) { | ||
123 | value = (Uint32)count; | ||
124 | } | ||
125 | } | ||
126 | return value; | ||
127 | } | ||
128 | |||
129 | /* Atomically increases the semaphore's count (not blocking) */ | ||
130 | int SDL_SemPost(SDL_sem *sem) | ||
131 | { | ||
132 | if ( ! sem ) { | ||
133 | SDL_SetError("Passed a NULL semaphore"); | ||
134 | return -1; | ||
135 | } | ||
136 | |||
137 | if ( release_sem(sem->id) != B_NO_ERROR ) { | ||
138 | SDL_SetError("release_sem() failed"); | ||
139 | return -1; | ||
140 | } | ||
141 | return 0; | ||
142 | } | ||